mac80211: make ieee80211_find_sta per virtual interface

Since we have a TODO item to make all station
management dependent on virtual interfaces, I
figured I'd start with pushing such a change
to drivers before more drivers start using the
ieee80211_find_sta() API with a hw pointer and
cause us grief later on.

For now continue exporting the old API in form
of ieee80211_find_sta_by_hw(), but discourage
its use strongly.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 16 insertions, 2 deletions

diff --git a/net/mac80211/sta_info.c b/net/mac80211/sta_info.c
index 594f2318c3d8..cde2da7a74df 100644
--- a/net/mac80211/sta_info.c
+++ b/net/mac80211/sta_info.c
@@ -801,8 +801,8 @@ void ieee80211_sta_expire(struct ieee80211_sub_if_data *sdata,
 		sta_info_destroy(sta);
 }
 
-struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_hw *hw,
-					 const u8 *addr)
+struct ieee80211_sta *ieee80211_find_sta_by_hw(struct ieee80211_hw *hw,
+					       const u8 *addr)
 {
 	struct sta_info *sta = sta_info_get(hw_to_local(hw), addr);
 
@@ -810,4 +810,18 @@ struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_hw *hw,
 		return NULL;
 	return &sta->sta;
 }
+EXPORT_SYMBOL_GPL(ieee80211_find_sta_by_hw);
+
+struct ieee80211_sta *ieee80211_find_sta(struct ieee80211_vif *vif,
+					 const u8 *addr)
+{
+	struct ieee80211_sub_if_data *sdata;
+
+	if (!vif)
+		return NULL;
+
+	sdata = vif_to_sdata(vif);
+
+	return ieee80211_find_sta_by_hw(&sdata->local->hw, addr);
+}
 EXPORT_SYMBOL(ieee80211_find_sta);